Revolutionary changes among energy producers and dramatically altered patterns of energy consumption across the planet are having profound implications for American national security in general and the U.S. Army specifically. The U.S. Army War College gathered experts from the policymaking community, academia, think tanks, the private sector, and the military services at the Reserve Officers Association in Washington, DC, in November 2013 to address first the major "new realities," both geographically and technologically, and then the specific military implications. The chapters of this compendium are based on the presentations delivered at that conference, which was funded through the generous support of the U.S. Army War College Foundation.